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Helm

v3.21.1Kubernetes Core
2026年6月12日

Helm v3.21.1 fixes a nil pointer panic in template operations and updates dependencies. A straightforward patch for stability.

  • breakingClientOnly template operations now error correctly instead of panicking

    Helm template commands executed without cluster access (ClientOnly mode) previously crashed with nil pointer panics. v3.21.1 returns proper template errors instead. If you have automation that catches panics, update error handling to expect typed template errors. Test your template workflows before production rollout.

  • securityUpgrade for Go security patch GO-2026-5026

    golang.org/x/net was bumped to v0.55.0 to fix GO-2026-5026. This is a supply-chain dependency, not directly exposed in Helm's API. Upgrade if your security scanning flags net vulnerabilities. No action needed if you're just using Helm normally—the fix is built in.

  • enhancementRegistry credentials now persist through HTTP fallback

    Registry operations now keep credentials when falling back from HTTPS to plain HTTP, thanks to oras-go v2.6.1. If you use private registries with HTTP-only endpoints, this improves reliability. No configuration change needed; the fix is automatic.

主な変更 (3)

  • Fixed nil pointer panic in helm template when running in ClientOnly mode (no Kubernetes cluster)
  • Preserved registry credentials on plain-HTTP fallback via oras-go v2.6.1 update
  • Bumped Go to 1.26 and golang.org/x/net to v0.55.0 to address GO-2026-5026